package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.utils.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Autowired
    AttrDao  attrDao;

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode(): ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if(catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            //attr_id  attr_name
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            //1、设置分类和分组的名字
            if("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }

            }


            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public void saveAttr(AttrVo attrVo) {
        //往pms_attr表中插入数据
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attrVo,attrEntity);
        baseMapper.insert(attrEntity);

        //往pms_attr_attrgroup_relation表中插入数据
        if(attrVo.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(attrVo, relationEntity);
            relationDao.insert(relationEntity);
        }
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId,String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if(catelogId != 0){
            queryWrapper.eq("catelog_id",catelogId);
        }

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            //attr_id  attr_name
            queryWrapper.and((wrapper)->{
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);

            //1、设置分类和分组的名字
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId()!=null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }



            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo info(Long attrId) {
        //1、属性基本信息
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity,respVo);

        if(attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //2、分组信息
            AttrAttrgroupRelationEntity relationEntity = relationDao.selectById(attrId);
            AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
            respVo.setAttrGroupId(attrGroupEntity.getAttrGroupId());
            respVo.setGroupName(attrGroupEntity.getAttrGroupName());
        }

        //3、分类信息
        Long[] parentPath = categoryService.findParentPath(attrEntity.getCatelogId());
        CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
        respVo.setCatelogPath(parentPath);
        respVo.setCatelogName(categoryEntity.getName());

        return respVo;
    }

    @Override
    public void updateAttr(AttrVo attr) {
        //1、更新基本信息
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        baseMapper.updateById(attrEntity);

        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {

            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());


            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", relationEntity.getAttrId()));
            if (count > 0) {
                //2、更新属性分组关系表
                relationDao.update(relationEntity
                        , new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", relationEntity.getAttrId()));
            } else {
                //新增
                relationDao.insert(relationEntity);
            }
        }
    }

    /**
     * 根据分组id获取属性值
     * @param attrgroupId
     * @return
     */

    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> relationEntities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                .eq("attr_group_id", attrgroupId));

        //收集属性id
        List<Long> attrIds = relationEntities.stream().map((relationEntitie) -> {
            return relationEntitie.getAttrId();
        }).collect(Collectors.toList());

        List<AttrEntity> entities = this.listByIds(attrIds);
        return entities;
    }

    /**
     * 获取当前分组未关联的属性
     * @param params
     * @param attrgroupId
     * @return
     */

    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity groupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = groupEntity.getCatelogId();

        //2、当前分组只能关联别的分组没有引用的属性
        //2.1）、当前分类下的其他分组
        List<AttrGroupEntity> attrGroupEntities = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId));
        List<Long> attrGroupList = attrGroupEntities.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2）、这些分组关联的属性
            List<AttrAttrgroupRelationEntity> groupIds = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .in("attr_group_id", attrGroupList));
            List<Long> attrIds = groupIds.stream().map(item -> {
                return item.getAttrId();
            }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);

        return pageUtils;

    }

}